RU2008107949A - METHOD FOR PRODUCING ELECTRICAL STRIP STEEL WITH ORIENTED GRAIN - Google Patents

METHOD FOR PRODUCING ELECTRICAL STRIP STEEL WITH ORIENTED GRAIN Download PDF

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RU2008107949A
RU2008107949A RU2008107949/02A RU2008107949A RU2008107949A RU 2008107949 A RU2008107949 A RU 2008107949A RU 2008107949/02 A RU2008107949/02 A RU 2008107949/02A RU 2008107949 A RU2008107949 A RU 2008107949A RU 2008107949 A RU2008107949 A RU 2008107949A
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rolled strip
furnace
cold
annealing
hot
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RU2008107949/02A
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RU2383634C2 (en
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Клаус ГЮНТЕР (DE)
Клаус Гюнтер
Лудгер ЛАН (DE)
Лудгер ЛАН
Андреас ПЛОХ (DE)
Андреас ПЛОХ
Эберхард СОВКА (DE)
Эберхард СОВКА
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Тиссенкрупп Стил Аг (De)
Тиссенкрупп Стил Аг
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1261—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest following hot rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
    • C21D8/1222—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon

Abstract

1. Способ получения электротехнической полосовой стали с ориентированным зерном из непрерывно-литых тонких слябов, включающий в себя следующие этапы: ! а) выплавка стали, содержащей наряду с железом и неизбежными примесями (в мас.%): ! Si2,5-4,0%С0,01-0,10%Mn0,02-0,50% ! S и Se с суммарным содержанием 0,005-0,04%, ! по выбору: ! до 0,07% А1, ! до 0,015% N, ! до 0,035% Ti, ! до 0,3% Р, ! один или несколько элементов из группы As, Sn, Sb, Те, Bi при содержании до 0,2%, ! один или несколько элементов из группы Cu, Ni, Cr, Co, Mo при содержании до 0,3%, ! один или нескольких элементов из группы В, V, Nb при содержании до 0,012%, ! б) внепечное рафинирование расплава в вакуумной установке и/или ковше-печи, ! в) непрерывная разливка расплава для получения заготовки, ! г) резка заготовки на тонкие слябы, ! д) нагрев тонких слябов в находящейся в линии печи до температуры 1050-1300°С, причем продолжительность выдержки в печи составляет не более 60 мин, ! е) непрерывная горячая прокатка тонких слябов в линии многоклетьевых станов горячей прокатки с получением горячекатаной ленты толщиной от 0,5 до 4,0 мм, причем ! при первом пропуске горячей прокатки с температуры 900-1200°С обжатие составляет более 40%, ! при втором пропуске обжатие составляет более 30%, ! при последнем пропуске горячей прокатки обжатие составляет не более 30%, ! ж) охлаждение горячекатаной ленты, ! з) намотка горячекатаной ленты в рулон, ! и) по выбору: отжиг горячекатаной ленты после ее намотки или перед холодной прокаткой, ! к) холодная прокатка горячекатаной ленты с получением холоднокатаной ленты с конечной толщиной от 0,15 до 0,50 мм, ! л) рекристаллизационный и обезуглероживающий отжиг холоднокатаной ленты, ! м) нанесение отжигательного сепаратора на пове1. A method for producing an electrotechnical strip steel with oriented grain from continuously cast thin slabs, which includes the following steps:! a) smelting of steel containing, along with iron and inevitable impurities (in wt.%):! Si2.5-4.0% C0.01-0.10% Mn0.02-0.50%! S and Se with a total content of 0.005-0.04%,! optionally: ! up to 0.07% A1,! up to 0.015% N,! up to 0.035% Ti,! up to 0.3% P,! one or more elements from the group As, Sn, Sb, Te, Bi with a content of up to 0.2%,! one or more elements from the group Cu, Ni, Cr, Co, Mo with a content of up to 0.3%,! one or more elements from group B, V, Nb with a content of up to 0.012%,! b) out-of-furnace refining of the melt in a vacuum installation and / or ladle furnace,! c) continuous casting of the melt to obtain a workpiece,! d) cutting the workpiece into thin slabs,! e) heating thin slabs in a furnace in a line to a temperature of 1050-1300 ° C, and the exposure time in the furnace is no more than 60 minutes,! f) continuous hot rolling of thin slabs in the line of multi-stand hot rolling mills to produce hot rolled strips with a thickness of 0.5 to 4.0 mm, moreover! at the first pass of hot rolling from a temperature of 900-1200 ° C, the reduction is more than 40%,! with the second pass, the compression is more than 30%,! at the last pass of hot rolling, the reduction is not more than 30%,! g) cooling of the hot rolled strip! h) winding a hot rolled strip into a roll,! i) optionally: annealing the hot rolled strip after winding it or before cold rolling,! j) cold rolling of a hot rolled strip to obtain a cold rolled strip with a final thickness of 0.15 to 0.50 mm,! k) recrystallization and decarburization annealing of cold-rolled strip,! m) applying an annealing separator to the powder

Claims (11)

1. Способ получения электротехнической полосовой стали с ориентированным зерном из непрерывно-литых тонких слябов, включающий в себя следующие этапы:1. The method of producing electrical strip steel with oriented grain from continuously cast thin slabs, which includes the following steps: а) выплавка стали, содержащей наряду с железом и неизбежными примесями (в мас.%):a) smelting of steel, containing, along with iron and inevitable impurities (in wt.%): SiSi 2,5-4,0%2.5-4.0% СFROM 0,01-0,10%0.01-0.10% MnMn 0,02-0,50%0.02-0.50%
S и Se с суммарным содержанием 0,005-0,04%,S and Se with a total content of 0.005-0.04%, по выбору:optionally: до 0,07% А1,up to 0.07% A1, до 0,015% N,up to 0.015% N, до 0,035% Ti,up to 0.035% Ti, до 0,3% Р,up to 0.3% P, один или несколько элементов из группы As, Sn, Sb, Те, Bi при содержании до 0,2%,one or more elements from the group As, Sn, Sb, Te, Bi with a content of up to 0.2%, один или несколько элементов из группы Cu, Ni, Cr, Co, Mo при содержании до 0,3%,one or more elements from the group of Cu, Ni, Cr, Co, Mo with a content of up to 0.3%, один или нескольких элементов из группы В, V, Nb при содержании до 0,012%,one or more elements from group B, V, Nb with a content of up to 0.012%, б) внепечное рафинирование расплава в вакуумной установке и/или ковше-печи,b) out-of-furnace refining of the melt in a vacuum installation and / or ladle furnace, в) непрерывная разливка расплава для получения заготовки,C) continuous casting of the melt to obtain the workpiece, г) резка заготовки на тонкие слябы,g) cutting the workpiece into thin slabs, д) нагрев тонких слябов в находящейся в линии печи до температуры 1050-1300°С, причем продолжительность выдержки в печи составляет не более 60 мин,d) heating the thin slabs in the furnace in the line to a temperature of 1050-1300 ° C, and the exposure time in the furnace is not more than 60 minutes, е) непрерывная горячая прокатка тонких слябов в линии многоклетьевых станов горячей прокатки с получением горячекатаной ленты толщиной от 0,5 до 4,0 мм, причемf) continuous hot rolling of thin slabs in the line of multi-stand hot rolling mills with obtaining hot-rolled strip with a thickness of 0.5 to 4.0 mm, and при первом пропуске горячей прокатки с температуры 900-1200°С обжатие составляет более 40%,at the first pass of hot rolling from a temperature of 900-1200 ° C, the reduction is more than 40%, при втором пропуске обжатие составляет более 30%,with the second pass, the compression is more than 30%, при последнем пропуске горячей прокатки обжатие составляет не более 30%,at the last pass of hot rolling, the compression is not more than 30%, ж) охлаждение горячекатаной ленты,g) cooling the hot rolled strip, з) намотка горячекатаной ленты в рулон,h) winding a hot rolled strip into a roll, и) по выбору: отжиг горячекатаной ленты после ее намотки или перед холодной прокаткой,i) optionally: annealing the hot rolled strip after winding it or before cold rolling, к) холодная прокатка горячекатаной ленты с получением холоднокатаной ленты с конечной толщиной от 0,15 до 0,50 мм,j) cold rolling of a hot rolled strip to produce a cold rolled strip with a final thickness of 0.15 to 0.50 mm, л) рекристаллизационный и обезуглероживающий отжиг холоднокатаной ленты,k) recrystallization and decarburization annealing of cold-rolled strip, м) нанесение отжигательного сепаратора на поверхность ленты,m) applying an annealing separator to the surface of the tape, н) заключительный отжиг прошедшей рекристализационный и обезуглероживающий отжиг холоднокатаной ленты для образования текстуры Госса,m) the final annealing of the recrystallization and decarburizing annealing of the cold rolled strip to form the Goss texture, о) по выбору: после заключительного отжига холоднокатаной ленты нанесение на нее электрической изоляции и последующий отжиг этой ленты с покрытием для снятия внутренних напряжений,o) by choice: after the final annealing of the cold rolled strip, applying electrical insulation to it and subsequent annealing of this coated tape to relieve internal stresses, п) по выбору: улучшение доменов холоднокатаной ленты с покрытием.o) optional: domain improvement of cold-rolled coated tape. 2. Способ по п.1, отличающийся тем, что жидкую сталь подвергают внепечному рафинированию (этап б)) сначала в вакуумной установке и затем в ковше-печи, при этом в качестве альтернативы может также выбираться последовательность: рафинирование сначала в ковше-печи и затем в вакуумной установке, или только в вакуумной установке или только в ковше-печи.2. The method according to claim 1, characterized in that the molten steel is subjected to out-of-furnace refining (step b)) first in a vacuum installation and then in a ladle furnace, while the sequence can also be selected as an alternative: refining first in a ladle furnace and then in a vacuum unit, or only in a vacuum unit, or only in a ladle furnace. 3. Способ по п.1, отличающийся тем, что расплав при внепечном рафинировании (этап б)) подвергают рафинированию попеременно в ковше-печи и в вакуумной установке.3. The method according to claim 1, characterized in that the melt during out-of-furnace refining (step b)) is subjected to alternating refining in a ladle furnace and in a vacuum installation. 4. Способ по одному из пп.1-3, отличающийся тем, что внепечное рафинирование (этап б)) расплава проводят до тех пор, пока содержание водорода при разливке (этап в)) не составит макс.10 ч/млн.4. The method according to one of claims 1 to 3, characterized in that the extra-furnace refining (step b)) of the melt is carried out until the hydrogen content during casting (step c)) is max. 10 ppm. 5. Способ по одному из пп.1-3, отличающийся тем, что жидкую сталь разливают для получения заготовки (этап с)) с помощью кристаллизатора, снабженного электромагнитным тормозом.5. The method according to one of claims 1 to 3, characterized in that the molten steel is poured to obtain a workpiece (step c)) using a mold equipped with an electromagnetic brake. 6. Способ по одному из пп.1-3, отличающийся тем, что на этапе в) проводят в поточной линии уменьшение толщины отлитой из стали заготовки с жидкой сердцевиной.6. The method according to one of claims 1 to 3, characterized in that, in step c), a reduction in the thickness of the cast steel billet with a liquid core is carried out in a production line. 7. Способ по одному из пп.1-3, отличающийся тем, что отлитую из стали заготовку изгибают и правят на этапе в) при температуре 700-1000°С (предпочтительно 850-950°С).7. The method according to one of claims 1 to 3, characterized in that the billet cast from steel is bent and adjusted in step c) at a temperature of 700-1000 ° C (preferably 850-950 ° C). 8. Способ по одному из пп.1-3, отличающийся тем, что заготовку подают в миксер при температуре свыше 650°С.8. The method according to one of claims 1 to 3, characterized in that the preform is fed into the mixer at a temperature of over 650 ° C. 9. Способ по одному из пп.1-3, отличающийся тем, что ускоренное охлаждение горячекатаной ленты проводят не позднее пяти секунд после ее выхода из последней прокатной клети.9. The method according to one of claims 1 to 3, characterized in that the accelerated cooling of the hot-rolled strip is carried out no later than five seconds after it leaves the last rolling stand. 10. Способ по одному из пп.1-3, отличающийся тем, что холоднокатаную ленту азотируют во время обезуглероживания или после него отжигом в содержащей аммиак атмосфере.10. The method according to one of claims 1 to 3, characterized in that the cold-rolled strip is nitrided during decarburization or after annealing in an atmosphere containing ammonia. 11. Способ по одному из пп.1-3, отличающийся тем, что в отжигательный сепаратор добавляют одно или несколько химических соединений для азотирования холоднокатаной ленты на этапе нагрева для заключительного отжига до момента вторичной рекристаллизации. 11. The method according to one of claims 1 to 3, characterized in that one or more chemical compounds are added to the annealing separator for nitriding the cold-rolled strip at the heating stage for the final annealing until secondary recrystallization.
RU2008107949/02A 2005-08-03 2006-07-20 Procedure for production of electro-technical flat bar with oriented grain RU2383634C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05016834.3A EP1752548B1 (en) 2005-08-03 2005-08-03 Method for producing a magnetic grain oriented steel strip
EP05016834.3 2005-08-03

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RU2383634C2 RU2383634C2 (en) 2010-03-10

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US (1) US8038806B2 (en)
EP (1) EP1752548B1 (en)
JP (1) JP2009503264A (en)
KR (1) KR101365652B1 (en)
CN (1) CN101238226B (en)
AU (1) AU2006274900B2 (en)
BR (1) BRPI0614374B1 (en)
CA (1) CA2616088C (en)
HU (1) HUE027079T2 (en)
MX (1) MX2008001413A (en)
PL (1) PL1752548T3 (en)
RU (1) RU2383634C2 (en)
SI (1) SI1752548T1 (en)
TW (1) TWI402352B (en)
WO (1) WO2007014867A1 (en)
ZA (1) ZA200800662B (en)

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